Shiva, a bus conductor, robs the corrupt in order to fund an organisation that aids those with disabilities. To avoid detection and trial, he pretends to be his twin, who has disabilities.

After a decade of research, the scientist Vaseegaran creates a sophisticated android robot with the help of his assistants, Siva and Ravi, to commission it into the Indian Army. He introduces the robot, named Chitti, at a robotics conference in Chennai. C

A brilliant scientist builds a humanoid robot to protect mankind, but things go awry when human emotions are programmed and inner turmoil causes the robot to act against him.